Invalid window handle. (Exception from HRESULT: 0x80070578)

[lucaswhob]

Hello My Friend I Use Your Guide To Use Headless WebView2
I Use This Code :
private IntPtr HWND_MESSAGE = new IntPtr(-3); CoreWebView2Environment webView2Environment = CoreWebView2Environment.CreateAsync(null, AppContext.BaseDirectory + "\\whatsappdata\\" + workingdirectory).GetAwaiter().GetResult(); maincontroller = await webView2Environment.CreateCoreWebView2ControllerAsync(HWND_MESSAGE);
But Error Run WebView2 From IIs
This Simple WinForm Application
Locally Run Good But Run From IIs Exception Throw

[RickStrahl]

You need to make sure you use a Windows account. I believe it won't work with IIS_APPLICATIONPOOLIDENTITY as there are permissions issues. It works for me with NETWORK SERVICE/SYSTEM or actual user account assuming you have permissions to write out the environment folder (you can specify a location).